English verb conjugation
SHOULD PRECAUTION

Regular verb: precaution - precautioned - precautioned

Affirmation

Simple form	V-ing form
I should precaution you should precaution he should precaution we should precaution you should precaution they should precaution	I should be precautioning you should be precautioning he should be precautioning we should be precautioning you should be precautioning they should be precautioning
Perfect	V-ing perfect
I should have precautioned you should have precautioned he should have precautioned we should have precautioned you should have precautioned they should have precautioned	I should have been precautioning you should have been precautioning he should have been precautioning we should have been precautioning you should have been precautioning they should have been precautioning

Negation

Simple form	V-ing form
I should not precaution you should not precaution he should not precaution we should not precaution you should not precaution they should not precaution	I should not be precautioning you should not be precautioning he should not be precautioning we should not be precautioning you should not be precautioning they should not be precautioning
Perfect	V-ing perfect
I should not have precautioned you should not have precautioned he should not have precautioned we should not have precautioned you should not have precautioned they should not have precautioned	I should not have been precautioning you should not have been precautioning he should not have been precautioning we should not have been precautioning you should not have been precautioning they should not have been precautioning

Interrogative form

Simple form	V-ing form
should I precaution? should you precaution? should he precaution? should we precaution? should you precaution? should they precaution?	should I be precautioning? should you be precautioning? should he be precautioning? should we be precautioning? should you be precautioning? should they be precautioning?
Perfect	V-ing perfect
should I have precautioned? should you have precautioned? should he have precautioned? should we have precautioned? should you have precautioned? should they have precautioned?	should I have been precautioning? should you have been precautioning? should he have been precautioning? should we have been precautioning? should you have been precautioning? should they have been precautioning?

Interro-negative form

Simple form	V-ing form
should I not precaution? should you not precaution? should he not precaution? should we not precaution? should you not precaution? should they not precaution?	should I not be precautioning? should you not be precautioning? should he not be precautioning? should we not be precautioning? should you not be precautioning? should they not be precautioning?
Perfect	V-ing perfect
should I not have precautioned? should you not have precautioned? should he not have precautioned? should we not have precautioned? should you not have precautioned? should they not have precautioned?	should I not have been precautioning? should you not have been precautioning? should he not have been precautioning? should we not have been precautioning? should you not have been precautioning? should they not have been precautioning?